body{font-family:'Arial', sans-serif;margin:0;padding:0;background-color:#f8f9fa;text-align:center;color:#333}header{color:#000;padding:40px 20px;font-size:28px;font-weight:bold}.content{padding:30px;max-width:900px;margin:auto;background:white;box-shadow:0 0 15px rgba(0,0,0,0.1);border-radius:10px}h1{font-size:30px}h2{color:#007bff;border-bottom:2px solid #007bff;display:inline-block;padding-bottom:5px;margin-top:20px}p{line-height:1.8;font-size:16px;margin:15px 0}.category-list{text-align:left;list-style:none;padding:0}.category-list li{background:#007bff;color:white;margin:5px 0;padding:10px;border-radius:5px;-webkit-transition:0.3s;transition:0.3s}.category-list li:hover{background:#0056b3;cursor:pointer}.footer{margin-top:20px;padding:15px;background-color:#333;color:white;font-size:14px;border-top:3px solid #007bff}a{color:#FFD700;text-decoration:none;font-weight:bold}a:hover{text-decoration:underline}